Cutter and shaper head



Feb, 4,' 1930. o. A. MILLER 1,745,701

CUTTER AND SHAPER HEAD I Filed Dec. 20, 1928 Altarugq Patented Feb. 4,1939

PATENT OFFICE one A. MILLER, or BUFFALO, new YORK ou'rrnn Ann SHAPER HEAD I Application filed December 20, 1928. Serial No. 327,292;

This invention relates to woodworking and more particularly to an improved cutter and shapercutter head such as is used inrabbet-ing Chamfering, grooving and otherwise shaping moldings and various articles of Wood. a y I I V Woodworking implements and shapers heretofore proposed, have beennot only elaborate and expensive in their make-up, but also '10 have proven difficult of adjustment and con trol. A different shaperhead has been necessary for each spindle (left and r1ght);"a

difierentset of cutters required therefor; and c a 'firm anchorage for the cutter against creep ing or loosening during operation on apiece of Wood has heretofore been impra'ctically I and unsatisfactorily obtained. 7

c i The present invention has for its objects to provide an improved cutter head of simple design capable of being used on either ,left

or. right spindles; to provide a cutter head having a novel arrangement of seats. forthe 'accommbdation: of c the several cutters in either right or left/spindle operation; to pro- 2.5 vide asimple and novel adjustable clamp for each cutter; to provide a novel cutter for use in cooperation withthe cutter head; and to improvetthe cutting edge of the cutter.

The invention further resides in the novel arrangement and combination of parts hereinafter more .fully set forth reference being had to the accompanying drawing wherein, ig.'1 isaside elevationof my improved cutter head equipped with its cutters and mounted in a position for operating on wood stock. Fig; 2 is a bottom'plan view of the woodworking tool depicted in Fig.1. I

Fig. .3; is a bottom plan view of thecutter temp s Fig. tis a crosssectional view illustrating aislightlymodified form of cutter bit. Figure 5 is across sectional view of thecutter bit shown in 'Figuresl' and2. I f Referring more in detail to the accompanyv ing drawing, the numeral 1 designates my improved j shaper cutter head which is clamped'on a spindle 2 between the spacing collars 3 'by a nut 4'.

One face of the cutter head,preferably thebottom face, is provided with a plurality of chordal seats 5 which are accessible at the opposite ends to the periphery of the head. These seats, illustrated as grooves, have companion slots 6 paralleling the respective grooves for at least a portion of their length and disposed outwardly thereof. The simplest and preferred arrangement restricts the number of grooves to three and disposes them in the form of an equi-lateral triangle about the central or spindle-receiving opening. 7 in the head. The ends of the grooves are shown as having their center lines intersecting one another at the periphery so that the width of the cut through the periphery will approximate that of a single groove, thereby affording a maximum length of'bearing surface for the individual cutters without unduly removing excessiveportions of the peripheral surface of the head. i

The cutters are designated by the numeral 8, the samecomprising a head-engaging and cutter-supporting rib 9,designed to have sliding fit in its respective groove 5 and an over hanging anchoring body portion-10 which seats flatly upon the body vofthe cutter head outwardly of the respective groove 5 and at I opposite sides of the respective slot. 6., To-

ward the cutting edge 11 the body portion 10 of the cutter is attenuated to a certain eX- tent but still affording a bearing surface or ledge 12 to reinforce and support that portionof the cutter immediately adjacent the cutting edge 11.

The cutter is firmly secured in its adjusted position in the groove 5 by a simple form of clamping means herein depicted as a single bolt or screw 13 which has its head 14: seating on the upper faceof the cutter head 1 with its shank passing through the slot 6 and threadedly engaged in a screw-receiving opening inthe overlying 'body portion 10 of the" cutter. By simply loosening the clamping bolt the cutter is released so as to permit of the same being projected more or less beyond the peripheryof the cutter head by sliding the bolt-carrying cutter along its gr0ove,"and after the desired adjustment has been obtained the clamping .bolt is tightened so as to firmly secure said cutter at its new adjustment.

The cutter 8, by having a guiding and supporting rib 9 both on its upper and lower sides,*is thereby rendered reversible,'adapting the single cutter for either right or left spindles. other wordsyifithe cutter "head is to be changed frbfn a right spindle to a left spindle or if the cutter is'to be trans: ferred from a cutter head mounted on a right spindle to a cutter head "mounted on le ft spindle, the clamping bolt 13 withdrawn from engagement with the cutter, the cutter turned over or reversed so as to, project from the oppositeend of its seat or groove 5, as indicated at 8 in Fig. 2, the clamping bolt re enga ''d with the cutter and set "to firmly secure the sameih fits reversed position. Qf course, -'in' the positionindicated bythe dot ted: "showingj8', :the fieIn-aining "cutters will also b"e-d;isposed in their reversed order. It will befiioted thatfthe =eixdsb of the outer wall ofe'a'ch groove =5 "li'einthe planeof the inner walls of theadj acen't grooves so as to contact tv ith andsupportthe butter of the *first igro ove against chattering. g p g in*Iieuorproviuinga c'utter with'arib on it supper and lower 1 sides, there may be proous forrnsand shtipesmay be combined or videcltwo sets "of cutters t me *for right spindl'e'and the' other fer a left spindle. Such form cutter i depicted*in "Fig. "4 wherein the 'cut't'e'rf8 has fasingle rib *e onl' The ciittingface drside of each'blade is prefeiatl scaled, a by a milling operation, so as to provide apluralityof very fine corrugation's indicated at 15,-which extend into the cutting age 11 soth'at when'th'e cutteris roaadd "the cutting page will pds'sessf rhahipIiei? (if vry-fi eteeth I V r Tn "operation {the utters, are first adjusted the 'aesird depth *of cut. The wood stock, indi'cate'd at 16, is then positioned on the table, indicated "at 17, and brought into operative contact with the cutters. the

particular illustration, the tliree ciitters are operating t'O'fiJ'iO Vi'de ai zibbet 18in If desiredcutter'shaving active ed'ges of var associated onthe single cutter head in order to produce a composite out on thestock, or

one cutter be used at atime' by zproj ecting the same slightly beyon d the 1 active F are or path "of the/remaining cutters. Thiscan be effected without perceptibly throwing the "cutter'h'ead' out of balance. For safetyythe *cuttersgrareicarried on the'lower sideffof the "'cutterhadandthe adj ustments efiected from above, as byapplyihga wrench to the head -14'of'therlamping bolt, By this arrangemntthe operator is not *required to reach over or about the Ecu'ttersr-in adjusting. them-, '"a'nd' is also protectedfto a large de'grg-ze from =coinin'ginto'eontact withthecutters when the headisrotating.

What is claimed is: g 1. In combination a shaper head for mounting on a spindle and having one face provided with a plurality of grooves opening at each end through the periphery of the head, a plurality of cutters, one for each groove having ribs on its opposite sides for selective engagement with its; respective groove whereby the cutter may be reversed in itsgroove and with respect to the shaper tion through either end of'its groove and be yondathe periphery of the shape-r head, and

adapted i means engaging the body :portiono-f'each cutterflintermediateitstwo ribs'forclampingthe cutterstb th eshaper head. 7 7

:2. A. shaper cutter head havingsa plurality of chordal grooves opening through the periphery thereof with the axes of the f gro'o'ves intersecting adjacent ones in the periphery, the edges of the kerfs through the 2p eriphery being in the-planes of the inner walls of "the intersecting grooves. r

3. A ishaper cutter *llea dyhaving chordallike seats -ar12inged #about its axis, and slotsparalleling saidseat s,"'a cuttereng'aged with eaehseat and having aapart-overlying the respective {slot and beaiing upon 'the shaper head at opposite sides of the sl'ot, and a clamping bolt iivea'h slot with =its head b'earing on the opposite face of the *sh'aper 3 head and its f shank threaded iii to vthe overlying part of the respective fcutter "for securing the cutter inanadjustedipositi'on.

Y 4(Afcuttr for shap'er heads haying a ribi I extending in the Tane of the cutting ---Eaee and an intermediate bearing ledge extending late'raily from between the ribs "and broadening into 'ananchoring body :portion adjacent the inner end of the cutterj'sa-i'd bodysportion formed with an anchor receiving opening.

A cutter for sh'a'per heads'havingaibody "with a cutting fa'ceia nd a pair of ribs extendin'g 'fromoppositeisid'es' ofthe'body for subfstantial'ly the fulll e'ngthvtliereof'and 'inthe V I ip'laneo f 'the cutting Yface, said body *being enlargedadj'acent the inner' enjd of the cutter in a plane perpendicular to the cuttingface to form a cutter {anchbring portion, saidip ortion being formed 'withafs'crew threaded ep'fiing to receive an anohoring bolt.

6. A shaper cutterhead having a mauty -o'r eho1 aa 1 gra es optnin threaghthejpe lri'p hery thereof withitli'e A x intersecting adjacent "ages" in the ,peiijphery,

the ends of the outer wal s terminatingin-the strengthens planes of the wau 'd'i t'he r adjacent grooves to serve as support ioracuae'm' when arranged in said latter grooves, and cutters arranged in the gr oovesand obtainingsupports at opposite sides in the periphery from the sidewalls of the respective kerfs formed in the periphery by said grooves.

7. A shaper cutter head having chordallike seats arranged in one face and about its axis and opening throughthe periphery thereof, and slots disposed outwardly from and paralleling said seats, said slots terminat- V ing short of the ends of the seats, a cutter for each seat having a rib engaging therein and having an enlarged portion overlying the adjacent slot, said enlarged portion being provided with an opening, and a bolt for each slot arranged therein with the head of the bolt engaging the opposite face of the cutter head, said bolt passing through the slot and into the opening of said enlarged portion of I p *the adjacent cutter for securing the cutter to the seat-containing face Oftlle cutter head, said enlarged portion giving reinforcement 

